diff --git a/server/notes.txt b/server/notes.txt
index 3daecb0..2df26d3 100644
--- a/server/notes.txt
+++ b/server/notes.txt
@@ -19,6 +19,6 @@ capacity management + activity tracker (préparation engagement, follow-up post-
 
 product vs custom
 
-ARR
+ARR/IRR
 
 suivi engagement (risk, event, deps, done vs planned)